package bit_pratice.day3;

/**
 * @author 美女
 * @date 2022/05/03 17:29
 **/

    class Base{
        public Base(String s){
            System.out.print("B");
        }

        public Base() {

        }
    }
    class Derived extends Base{
        public Derived (String s) {
            super();

            System.out.print("D");
        }
        public static void main(String[] args){
            new Derived("C");
        }
    }

